C# 文法練習(5): 語句

if (bool) { } else { }switch (v) { case v1: ... break; case v2: ... break; ... default: ... break; }do { } while (bool);while (bool) { }for (int i; i 

C# 的 switch 語句支援字串, 但好像只能用 const string 類型的變數.

using System;class MyClass{    static void Main()    {        string[] str = { "a", "bb", "ccc" };        const string s1 = "bb";        const string s2 = "ccc";        foreach (string s in str)        {           switch(s)           {               case s1: Console.WriteLine(s.Length); break;               case s2: Console.WriteLine(s.Length); break;               default: Console.WriteLine(s); break;            }        }        Console.ReadKey();    }}